Discharge cold switching valve and its switching method

ABSTRACT

A discharge cold switching valve includes: an operating member, a discharge cold switching member, and a water outlet switching member. The discharge cold switching valve has a discharge cold channel and a water outlet channel. When the operating member is in the initial position, the discharge cold switching member is in the first position, the joint between the water outlet channel and the water inlet end are sealed, the discharge cold channel opens; when the operating member switches to the shower position, the discharge cold switching member is moved by the operating member to the second position, the joint between the discharge cold channel and the water inlet end are sealed, and the water outlet channel opens, engaging the operating member with the water outlet switching member. The operating member drives the water outlet switching member to open one or both of the first and second water outlet passages.

TECHNICAL FIELD

The present invention relates to a water discharge device, and more particularly to a switching valve.

BACKGROUND TECHNIQUE

when people are in the shower, especially in the winter, it needs to firstly drain the cold water in the water pipe, until there is warm water out, then begin the shower, the traditional way of discharge cold are manually controlled way, that is, the valve is been switched to the warm water state until the cold water in the water row finished, and in some areas even it take a few minutes to discharge cold water, in this discharge cold method it needs to touch and feel the water temperature, need to waste time specifically for waiting, or the people will be frozen to cold water, if not guarding nearly, there may be a waste of hot water resources.

The utility model patent 201521135958.8 discloses a switching valve having a discharge cold function, which is provided with a discharge passage for controlling the communication between the water outlet channel and the discharge cold passage so that the residual cold water in the water outlet channel can be discharged from the discharge cold passage; the discharge cold passage is closed when the water is discharged normally. In order to achieve this technical effect, the water outlet channel and the discharge cold passage are opened and closed by a one-way valve and a reset spring. First of all, because the one-way valve is in the normally closed state, when discharging cold, it needs a certain suction to open the one-way valve, the required suction must be able to overcome the spring force and one-way valve and Y-ring friction; secondly, when discharging cold, the venturi effect is used, the the resulting suction is parallel to the direction of one-way valve movement, but the cross-sectional area difference is very small, that is, the action area on the one-way valve corresponding to the suction is small, so the downward force on the one-way valve by is also very small, when the pressure is less than a certain value, it simply can not open the one-way valve, and can not discharge the cold water of the top spray water; so that the flow area of the cooling section is very small, the flow is very small, greatly extending the the time of the discharging cold; In addition, in the process of using the hand shower, once the hand shower is with a small flow of water or water stop function, resulting in increased pressure inside the discharging cold channel, the water flowing through the hand shower from the suction hole to the top spray, so that top spray water spills, so the whole structure is not reliable.

THE CONTENTS OF THE INVENTION

The main technical problem to be solved by the present invention is to provide a switching valve which functions water way switching and closing water and discharging cold water.

Another major technical problem to be solved by the present invention is to provide a switching method of the discharge cold switching valve. The two different functions of the discharge cold switching and water outlet switching are respectively carried out by two different actions, and the directivity is better.

In order to solve the above-mentioned technical problems, the present invention provides a discharge cold switching valve, comprising: an operating member, a discharge cold switching member, a water outlet switching member;

the discharge cold switching valve has a discharge cold channel, an water outlet channel, a first outlet water passage communicating with the water outlet channel and a second water outlet passage communicating with the water outlet channel; and when the operating member is in the initial position, the discharge cold switching member is located at the first position, the joint between the water outlet channel and the water inlet end is sealed by the discharge cold switching member, the discharge cold channel is opened; when the operating member is switched to the use position, the discharge cold switching member is moved by the operating member to the second position, the joint between the discharge cold channel and the water inlet end are sealed by the discharge cold switching member, and the water outlet channel is opened;

when the water outlet channel is opened, the operating member is engaged with the water outlet switching member, and the operation member is further operated to drive the movement of the water outlet switching member so that one or both of the first water outlet passage and the second water outlet passage are opened.

In a preferred embodiment: after the operating member is moved from the initial position to the use position, the operating member can be reset to the initial position and is engaged with the water outlet switching member; when the operating member is reset to the initial position, the discharge cold member is held in the second position by the action of the water pressure of the water outlet channel.

In a preferred embodiment: said discharge cold member is a switching shaft, one end of the switching shaft is engaged with the operating member in one way and the other end of the switching shaft abuts against the first reset member; and the circumference of the switching shaft is provided with a first seal member, and the operation member drives the switching shaft to move from the first position to the second position along its own axial direction.

In a preferred embodiment: the joint between the discharge cold channel and the water outlet end and the joint between the water discharge cold channel and the water inlet end are located on the right side and the left side of the water inlet end, respectively; the first seal member is located on the left side of the inlet end when the shaft is in the first position and the first seal member is translated to the right side of the inlet end when the switching shaft is in the second position.

In a preferred embodiment: further comprising a discharge cold closing member, which including a water stop column and a temperature sensing member provided in the discharge cold channel, the telescopic end of the temperature sensing member is engaged with the water stop column, and when the hot water flows through the discharge cold channel, the telescopic end of the temperature sensing member is extended to drive the water stop column to move; the second seal provided on the water stop column seals the discharge cold channel.

In a preferred embodiment: said water stop column is provided with a pressure relief hole in the direction of the water flow; when the water stop column seals the discharge cold channel, the water in the discharge cold channel flows out of the discharge cold channel through the pressure relief hole.

In a preferred embodiment: when water outlet channel is opened, the operating member and the water outlet switching member are rotatably connected.

In a preferred embodiment: said water outlet switching member is a valve stem, the side wall of which is provided a third seal member, said water outlet channel is respectively connected to the second water outlet passage and the first water outlet passage; the operating member drives the valve stem to rotate axially around the valve stem, and when the third seal member is rotated to the joint between the water outlet channel and the second water outlet passage or the first water outlet passage, the corresponding water outlet passage is blocked;

and when the third seal member is rotated to another position, the second water outlet passage and the first water outlet passage are simultaneously opened.

In a preferred embodiment: said operating member is a spinning button, the discharge cold switching member is engaged to the spinning button in a pressing direction; the water outlet switching member is rotatably connected to the spinning button.

In a preferred embodiment: said discharge cold switching is provided with a positioning pin, the water outlet switching member is provided with a first positioning groove and a second positioning groove in the pressing direction, respectively; and the positioning pin is moved from the first positioning groove to the second positioning groove when the spinning button is pressed, and the spinning button drives the water outlet switching member to rotate, and the positioning pin is located in the first positioning groove.

In a preferred embodiment: said second positioning grooves are continuously distributed along the circumferential direction of the water outlet switching member; there are three the first positioning grooves arranged along the circumferential intervals of the water outlet switching member; and the second water outlet passage is opened or the first water outlet passage is opened or the second water outlet passage and the first water outlet passage are simultaneously opened when the positioning pin is engaged with the different first positioning groove.

The present invention also provides a discharge cold switching valve, comprising: an operating member, a discharge cold switching member, a water outlet switching member; the discharge cold switching valve has a discharge cold channel, an water outlet channel, a first outlet water passage communicating with the water outlet channel and a second water outlet passage communicating with the water outlet channel; the operation member is connected with both the discharge cold switching member and the water outlet switching member, and pressing the operation member can drive to the discharge cold switching member to move from the discharge cold position to the shower position; the rotating the operating member can drive the water outlet switching member to rotate so that one or both of the first water outlet passage and the second water outlet passage are opened.

The present invention also provides a discharge cold switching valve, comprising: the operating member of the discharge cold switching valve has a degree of freedom of movement in both directions, and when the operating member is moved in the first direction, the discharge cold switching valve is switched from a discharge cold state to an outlet state; when the discharge cold switching valve is in the water outlet state, the operating member is moved in the second direction, one or both of the first water outlet passage and the second outlet passage in discharge cold switching valve are open.

Compared with the prior art, the technical proposal of the invention has the following beneficial effects:

1. The present invention provided a discharge cold switching valve in which the discharging cold state and the water outlet state are two separate states, and the discharging cold is not performed in the water outlet state, and the discharging cold is automatically performed in the closed state. So the hot water is flowing out at the beginning when the water is in the water outlet state, the traditional discharge cold switching valve is mostly drained at the same time of water outlet, so users still need to wait for some time before use.

2. The present invention provides a discharge cold switching valve, when the water inlet end is opened and the operation member is not switched to the shower mode, if the cold water in the water pipe has been completely discharged, the hot water in the water pipe is discharged out from the discharging cold passage. In order to avoid the waste of hot water, set the discharging cold blocker, so that when the flow through the discharging cold channel is hot water, the discharging cold blocker will block the discharging cold channel.

3. The present invention provides a discharge cold switching valve, if the operating member does not switch to a shower mode for a long period of time, then a very large amount of water is accumulated between the water inlet and the water stop column, causing great water pressure, it is easy to damage the discharge cold switching valve. Therefore, the water stop column is provided with a pressure hole in the direction of the water flow so that the water pressure in the discharge cold channel is not excessively large, and protecting the discharge cold switching valve from being easily damaged.

4. The present invention provides a discharge cold switching valve, wherein the operation member is a spinning button, and when the button is pressed, the discharge cold switching member is moved from the first position to the second position with the button. The operation member is reset after the pressing is completed, and the discharge cold switching member is held in the second position by the water pressure in the water outlet passage, so that the discharge cold switching valve is kept in the water outlet state. When the water outlet is finished, the water pressure in the water outlet channel disappears, and the discharge cold switching member is reset to the first position by the action of the first reset member, and the discharge cold switching valve is returned to the discharge cold position to cool the water, and realize to discharge cold when closing the water.

5. The present invention provides a discharge cold switching valve which is provided a second positioning groove so that when the operation member drives the discharge cold switching member to move, the positioning pin is moved from the first positioning groove into the second positioning groove and a stopper is released, suggesting the user that the discharge cold switching has been completed, it has a relatively strong operational direction. And the first positioning grooves are arranged at intervals in the direction of rotation so that the water outlet switching member also has a very clear stall in the switching process.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view of the discharge cold switching valve in a discharge cold state in a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of a water flow of the discharge cold switching valve in a discharge cold state in a preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view of the discharge cold switching valve when the hot water is blocked in the preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view of the discharge cold switching valve in a shower state according to a preferred embodiment of the present invention;

FIG. 5 is a schematic diagram of a water flow of the discharge cold switching valve in a shower state is present in the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The technical solutions of the present invention will be described in detail with reference to the accompanying drawings and embodiments.

Referring to FIGS. 1-5, a discharge cold switching valve, comprising: an operating member 1, a discharge cold switching member 2, a water outlet switching member 3;

the discharge cold switching valve has a discharge cold channel and an water outlet channel, when the operating member 1 is in the initial position, the discharge cold switching member 2 is located at the first position, the joint between the water outlet channel and the water inlet end 4 are sealed by the discharge cold switching member 2, the discharge cold channel is opened; when the operating member 1 is switched to the shower position, the discharge cold switching member 2 is moved by the operating member 1 to the second position, the joint between the discharge cold channel and the water inlet end 4 are sealed by the discharge cold switching member 2, and the water outlet channel is opened;

when the water outlet channel is opened, the operating member 1 is engaged with the water outlet switching member 3, and the operation member 1 is further operated to drive the movement of the water outlet switching member 3 so that one or both of the first water outlet passage and the second water outlet passage are opened.

In the present embodiment, the discharge cold switching valve is connected to the shower system, and the first water outlet passage and the second outlet passage are connected to the hand shower and the top shower respectively. Therefore, the above-mentioned discharge cold switching valve has two separate states, one is the discharge cold state and the other is the water outlet state, and the discharge cold is not performed during the showering of the user, and after the shower is completed, the discharge cold switching valve automatically switch to the discharge cold state for discharging cold. So the hot water is flowing out at the beginning when the discharge cold switching is in the water outlet state, the traditional discharge cold switching valve is mostly drained at the same time of water outlet, so users still need to wait for some time before use.

The second reset member 11 abuts against the operating member 1, and the second reset member 11 accumulates the elastic return force when the operation member is moved from the initial position to the use position. Therefore, when the user withdraws the force applied to the operating member, the operating member 1 is reset to the initial position by the action of the second resetting member 11 and is engaged with the water outlet switching member 3; and the operating member 1 is reset to the initial position, the discharge cold switching member 2 is held in the second position by the action of the water pressure of the water outlet channel. This makes it possible to switch between the discharge cold position and the shower position, and when the water outlet is switched, the discharge cold switch valve remains in the shower position without being affected.

The specific structure: the discharge cold switching member 2 is a switching shaft, and one end thereof engaged with the operating member in one way, and the other end abuts against the first reset member 21, and the operation member 1 drives the switching shaft to translate along the axis of the switch shaft, the first reset member 21 accumulates the elastic return force during the process of translating of the switching shaft, so that when the water is turned off, the water pressure in the water outlet channel disappears, and the discharge cold switching member 2 is reset to the first position by the return force of the first reset member 21, thereby achieving the purpose of automatically switching the discharge cold switching valve to the discharge cold state when the water is turned off.

The outer periphery of the switching shaft is provided a first seal member 22, the joint between the discharge cold channel and the water outlet end 4 and the joint between the water outlet passage and the water inlet end 4 are located on the right side and the left side of the water inlet end 4, respectively; when the shaft is in the first position, the first seal member 22 is located on the left side of the inlet end 4, the water outlet channel and the inlet end 4 are sealed and isolated, the water outlet channel is closed; and when the switching shaft is in the second position; the first seal member 22 is translated to the right side of the inlet end 4, the discharge cold channel and the water outlet end 4 are sealed and isolated, the discharge cold channel is closed.

In addition, when the water inlet end 4 is opened and the operation member 1 is not switched to the shower mode, if the cold water in the water pipe has been completely discharged, the hot water in the water pipe flows out of the discharge cold passage. In order to avoid wasting hot water, the present embodiment also includes a discharge cold seal members 23 which include a water stop column 231 and a temperature sensing member 232 provided in the discharge cold passage, and the telescopic end of the temperature sensing member 232 is engaged to the water stop column 231, when the water flowing through the discharge cold passage is hot water, the telescopic end of the temperature sensing member 232 is extended to translate the water stop column 231; the second seal 233 provided on the water stop column 231 seals the discharge cold channel. At the same time, if the operating member 4 is not switched to the shower mode for a long time, the discharge cold channel will accumulate a large amount of water between the inlet end 4 and the water stop column 231, causing a large amount of water pressure, easily damaging the discharge cold switching valve.

Therefore, in the present embodiment, the water stop column 231 is provided with a pressure relief hole 234 in the direction of the water flow. When the water stop column 231 seals the discharge cold channel, the water in the discharge cold channel flow out through the pressure relief hole 234.

The above is the discharge cold principle and discharge cold process of the discharge cold switching valve in the discharge cold state. The water outlet state is further described below.

The operation member 1 is a spinning button, and the discharge cold switching member 2 is engaged to the spinning button in a pressing direction, and the water outlet switching member 3 is engaged to the spinning button in a rotational direction.

The water outlet member 3 is a valve stem having a third seal member 31M the side wall, and the water outlet channel is communicated with the second water outlet passage and the first water outlet passage, respectively.

When the operating member 1 is pressed, the water outlet channel is opened. And then the operating member 1 is rotated so that the operating member 1 drives the valve stem rotate about the axial of the valve stem, when the third seal 31 is rotated to seal the joint between the water outlet channel and the second water outlet passage or the first water outlet passage, the corresponding water outlet passage is blocked; and said second water outlet passage and said first water outlet passage are simultaneously opened when said third seal member is rotated to another position. This will achieve the purpose of the water switching of water outlet way.

In addition, since the discharge cold switching member 2 is moved unidirectionally with the operating member 1 and the discharge cold state is smoothly switched to the shower state only when the discharge cold switching member is moved to a specific position, the operation of the user is required to provide directional assistance. In the present embodiment, the discharge cold switching valve is provided with a positioning pin 5, water outlet switching member is provided with a first positioning groove 32 and a second positioning groove 33 respectively in the pressing direction, and the operating member 1 is located at an initial position, the position pin 5 is matched with the first positioning groove 32; when the operating member 1 is in the use position, the positioning pin 5 is moved from the first positioning groove 32 to the second positioning groove 33 to thereby issue a flap to prompts the user that the discharge cold switching has been completed, so that the operation of the consumer can be prompted.

Further, the second positioning groove 33 covers the circumferential circle of the switching member 3 in the circumferential direction of the water outlet switching member 3, so pressing the spinning button can generate a voice prompt for switching in place, regardless of the rotation of the valve stem to an arbitrary position; the valve stem can rotates with the spinning button, in order to ensure that the positioning pin 5 can be positioned with the first positioning groove 32, the number of the first positioning groove 32 is three, provided along the circumference of the water outlet 3, so that the when the positioning pin 5 is engaged with the different first positioning groove 32, the second water outlet passage is opened or the first water outlet passage is opened or the second water outlet passage and the first water outlet passage are simultaneously opened. So that the operation member 1 has a clear sense of stalls in the process of driving the stem to rotate, the user operation is relatively clear. In actual use, if the number of the water outlet passage is three or more, the number of the second positioning grooves 33 corresponding thereto may be further increased, which is a simple replacement of the present embodiment.

In the present embodiment, there is provided a discharge cold switching valve having a degree of freedom of movement in two directions, and when the spinning button is moved in the first direction, the discharge cold switching valve is switched from a discharge cold state to an outlet state; when the discharge cold switching valve is in the water outlet state, the operating member rotates in the second direction, the one or both of the first water outlet passage and the second water outlet passage in the discharge cold switching valve are opened. So that the implementation of the cooling and water switch through the different directions of the action to be achieved separately, the range of motion is relatively strong.

The foregoing is intended to be a preferred embodiment of the present invention, but the scope of the invention is not limited thereto, and any person skilled in the art will be able to easily think of changes within the technical scope of the present invention or substitutions are to be covered within the scope of the present invention. Accordingly, the scope of protection of the present invention should be determined by the scope of the claims. 

1. A discharge cold switching valve, wherein comprising: an operating member, a discharge cold switching member, a water outlet switching member; the discharge cold switching valve has a discharge cold channel, an water outlet channel, a first outlet water passage communicating with the water outlet channel and a second water outlet passage communicating with the water outlet channel; and when the operating member is in the initial position, the discharge cold switching member is located at the first position, the joint between the water outlet channel and the water inlet end is sealed by the discharge cold switching member, the discharge cold channel is opened; when the operating member is switched to the use position, the discharge cold switching member is moved by the operating member to the second position, the joint between the discharge cold channel and the water inlet end are sealed by the discharge cold switching member, and the water outlet channel is opened; when the water outlet channel is opened, the operating member is engaged with the water outlet switching member, and the operation member is further operated to drive the movement of the water outlet switching member so that one or both of the first water outlet passage and the second water outlet passage are opened.
 2. The discharge cold switching valve according to claim 1, wherein after the operating member is moved from the initial position to the use position, the operating member can be reset to the initial position and is engaged with the water outlet switching member; when the operating member is reset to the initial position, the discharge cold member is held in the second position by the action of the water pressure of the water outlet channel.
 3. The discharge cold switching valve according to claim 2, wherein said discharge cold member is a switching shaft, one end of the switching shaft is engaged with the operating member in one way and the other end of the switching shaft abuts against the first reset member; and the circumference of the switching shaft is provided with a first seal member, and the operation member drives the switching shaft to move from the first position to the second position along its own axial direction.
 4. The discharge cold switching valve according to claim 3, wherein the joint between the discharge cold channel and the water outlet end and the joint between the water outlet passage and the water inlet end are located on the right side and the left side of the water inlet end respectively; the first seal member is located on the left side of the inlet end when the shaft is in the first position and the first seal member is translated to the right side of the inlet end when the switching shaft is in the second position.
 5. The discharge cold switching valve according to claim 1, further comprising a discharge cold closing member, which including a water stop column and a temperature sensing member provided in the discharge cold channel, the telescopic end of the temperature sensing member is engaged with the water stop column, and when the hot water flows through the discharge cold channel, the telescopic end of the temperature sensing member is extended to drive the water stop column to move; the second seal provided on the water stop column seals the discharge cold channel.
 6. The discharge cold switching valve according to claim 5, wherein said water stop column is provided with a pressure relief hole in the direction of the water flow; when the water stop column seals the discharge cold channel, the water in the discharge cold channel flows out of the discharge cold channel through the pressure relief hole.
 7. The discharge cold switching valve according to claim 1, wherein when water outlet channel is opened, the operating member rotatably connects with the water outlet switching member.
 8. The discharge cold switching valve according to claim 7, wherein said water outlet switching member is a valve stem, the side wall of which is provided a third seal member, said water outlet channel is respectively connected to the second water outlet passage and the first water outlet passage; the operating member drives the valve stem to rotate axially around the valve stem, and when the third seal member is rotated to the joint between the water outlet channel and the second water outlet passage or the first water outlet passage, the corresponding water outlet passage is blocked; and when the third seal member is rotated to another position, the second water outlet passage and the first water outlet passage are simultaneously opened.
 9. The discharge cold switching valve according to claim 1, wherein said operating member is a spinning button, the discharge cold switching member is engaged with the spinning button in a pressing direction; the water outlet switching member is rotatably connected to the spinning button.
 10. The discharge cold switching valve according to claim 9, wherein said discharge cold switching is provided with a positioning pin, the water outlet switching member is provided with a first positioning groove and a second positioning groove in the pressing direction, respectively; and the positioning pin is moved from the first positioning groove to the second positioning groove when the spinning button is pressed, and the spinning button drives the water outlet switching member to rotate, and the positioning pin is located in the first positioning groove.
 11. The discharge cold switching valve according to claim 10, wherein said second positioning grooves are continuously distributed along the circumferential direction of the water outlet switching member; there are three the first positioning grooves arranged along the circumferential intervals of the water outlet switching member; and the second water outlet passage is opened or the first water outlet passage is opened or the second water outlet passage and the first water outlet passage are simultaneously opened when the positioning pin is engaged with the different first positioning groove.
 12. A discharge cold switching valve, wherein comprising: an operating member, a discharge cold switching member, a water outlet switching member; the discharge cold switching valve has a discharge cold channel, an water outlet channel, a first outlet water passage communicating with the water outlet channel and a second water outlet passage communicating with the water outlet channel; the operation member is connected with both the discharge cold switching member and the water outlet switching member, and pressing the operation member can drive to the discharge cold switching member to move from the discharge cold position to the shower position; the rotating the operating member can drive the water outlet switching member to rotate so that one or both of the first water outlet passage and the second water outlet passage are opened.
 13. A switching method of a discharge cold switching valve, wherein comprising: the operating member of the discharge cold switching valve has a degree of freedom of movement in both directions, and when the operating member is moved in the first direction, the discharge cold switching valve is switched from a discharge cold state to an outlet state; when the discharge cold switching valve is in the water outlet state, the operating member is moved in the second direction, one or both of the first water outlet passage and the second outlet passage in discharge cold switching valve are open. 